Pulp-working apparatus



Feb. 18, '1930. v J D, HASKELL 1,7475545 PULP woRKING APARATUs Filed March 2, 1929 /n ver/'for John D; Has/e/ Patented Feb. 18,' 1030 nas JOHN D. HASHELL, OF FULTON, NEW YORK, ASSIGNOR T0 DILTS MACHINE WORKS, INC.,

OF FULTON, NEW YORK, A CORPORATIO OF NEW YORK E''ILP-WOBKING APPABAT'US Application filed March 2,

This invention relates to apparatus for workin paper pulp, and it belongs to the class' o manufacturing equipment or methods setting forth a variety of vcombinations of settling troughs and thickeners and other elements whereby the stock is usually served to and made ready continuously for the finishing steps in the process.

This invention has for its object a special arrangement of the essential mechanism wherein there would be no adjustable weir or similar construction in the discharge box from the breaker beater, and no necessity therefor, but the control of the stock going to the system would be made in the pipe line between the sump and the settling trough or equivalent, simply by the use of a valve. By the aid of this invention, instead of reL turning the white-water from the thickener back to the head of the settling trough, it will be allowed to run by gravity back to the sump, or with by-pass connections it will be directed to the breaker beater, or through a water heater and thereafter to the breaker beater if desired. i

The combination of structures comprising this invention is illustrated in the accompanying drawings, which represent in aodiagrammatic manner the general layout or location of the devices employed, and it will be understood that no special construction of any individual member of the kind and number illustrated in any way limits this invention.

Of the drawings Fig. 1 represents a side view ofall the parts assembled, and Fig. 2 illustrates a valved connection between the extractor and the' sump, sometimes employed.

Throughout the drawing and description the same number-is employed to refer to the same part.

Considering the drawing, the breaker beater 1 has the customary roll 2, and may be provided with an extractor or perforated plate 3 through which beaten stock may reach the outlet 4 and pass into a sump 5. Any suitable extractor' devices may be substituted.

The sump or receptacle 5 is connected by a pipe 6 .with a pump 7, and the outlet 8 of the 1929. Serial No. 344,037.

pump -is connected with a valve 9 usually placed near the pump, from which valve an uptake pipe 10 rises and is provided with a terminal arranged to deliver material into a rifller or settling trough 11. The settling box may be of any chosen construction, and it is arranged to communicate with a thickener 12 of such formation and operation as maybe found advantageous. The thickener has av discharg'e outlet 13 whereby the stock may be directed to the stock chest and finishing machinery not shown. The thickener has also a downwardly extending pipe 14, which may have, by means of by-pass piping 15, connection with a fluid heater 16. From the heater an outlet pipe 17 extends downwardly and the by-pass connection 15 is connected by means of the pipe 18, valve 19 and fitting 21 with the Vertical pipe 17. From 'the fitting 21 a pipe 22 leads to a connection 23, which is in communication with the sump 5 by way of the valve 24.' and pipe 25. The beater 1 is also connected with the connection 23 by way of the valve 26 and pipe 27.

In operation, the pump takes the materials from the sump 5, and raises the same into the settling trough 11 which is as shown in communication with the thickener 12. The white-water may be directed by way of the pipe 14, fitting 15,, pipe 18 and open valve 19 back to either the sump or the beater or both. If the valve 19 is closed, the fluid from the pipe 14 is passed through the heater 15. The particular arrangement' of the members illustrated is not intended to limit this invention thereto, as the component members may be any selected construction and may be varied in their positions as desired. If the valve 19 is open, any fluid in the heater will drain into the lower conduits, and an inlet air valve or standpipe 20 may be provided to permit the entrance or escape of air to or from the interior of the heater. It will now be noted that the control of the stock going to the system due to the operation of the pump, is fully controlled by the valve 9 in the pipe line. In Fig. 2 the arrange'ment of the parts is the same as before with the exception that a valve or gate 29 is introduced in the connection 28 between the extractor Chamber below 100 the extractor 3 and the pump. It has been found in the operation ofa perforated exw difierence in gravityphead between the stock in the heater and that in the receptacle. This would necessitate forcing the stock from below the extractor plate into the receptacle under a hydrostatic head, but this applicant is not sure that the result-would be as good as where the control is handled by mechanical.

means as illustrated Vherein, and the flow of stock accelerated through the opening from the plate. This acceleration seems to sweep the dirt and small waste material out of the bedplate box, and in this respect the operation is of a distinctly superior nature.

Having now described this invention and explained the manner of its operation, I claimz- 1. In combination with a breaker beater, an outlet therefrom for beaten stock, a receptacle for the said stock, a ump connected with the receptacle, an upta {e pipe leading from the pump, a valve in the said pipe near the pump, pulp-treating means for receiving the pulp at a higher level, said means having -an -outlet for discharging the treated pulp,

said means having also a downwardly extending pipe provided with connections with the said beater and with the said receptacle, and valves forA controlling the said connections independently. J

2. In combination with a breaker beater,

i an outlet therefrom for beaten stock, a receptacle for the'said stock, a pump connected with the saidreceptacle, an uptake pipe leadmg from the pump, a valve in the saidpipe v`near the pump, pulp-treating means for rece1vmg the pulp at a higher level, said means having an outlet for discharging the treated pulp, said means having also a downwardly extending pipe provided with connections with the said beater and with the said' receptacle, valves for controlling the said connections independently, a flu1d heater, and by-pass piping provided 'with valve devices for directing the material from the said down pipe through the said heater at the will of the operator.

3. In comblnation with a breaker beater,

an outlet therefrom for beaten stock, a pump connected with the said outlet', an`uptake -pipe leading from the pum a valve in the said plpe near the pump, pu p-treating means for u receiving the pulp ata higher level, said means having an outlet for dis'charging the treated pulp, said means having also a down- I wardly extending pipe,`a receptacle, the said down ipe being provided with connections with t e said beater and with lthe said recepa tacle, and valves for controlling the saideonw nections independently.

4. In comblnation with a breaker beater, an outlet therefrom for the beaten stock, a pump connected with the said outlet, an uptake pipe leading from the pump, a valve in the said pipe near the pump, pulp-treatingV means for receiving the pulp at a higher level, said means having an outlet for discharging the treated pulp, said means having also a downwardly extending pipe, a receptacle, the said down pipe being provided with connections with the said beater and With the said 

